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Otoacoustic emission in a dog.
M H Sims1, J J Brace, D A Arthur
1Department of Animal Science, College of Veterinary Medicine, University of Tennessee, Knoxville 37901.
Journal of the American Veterinary Medical Association
|March 15, 1991
Summary
A dog experienced a continuous high-frequency sound from its ear, identified as otoacoustic emission. While treatment is challenging in humans and unreported in animals, this condition is not life-threatening for dogs.
Area of Science:
- Veterinary Medicine
- Otoacoustic Emissions
- Animal Audiology
Background:
- Otoacoustic emissions (OAEs) are sounds generated by the inner ear, measurable in humans and some animals.
- Understanding OAEs aids in diagnosing hearing function and identifying auditory system disorders.
Observation:
- A 7-month-old Poodle presented with a continuous, high-frequency sound (9,594 Hz, 45.5 dB SPL) originating from its left ear.
- Diagnostic tests, including brain stem auditory-evoked responses and behavioral audiometry, indicated normal hearing in both ears.
Findings:
- The observed sound was consistent with otoacoustic emission, a phenomenon previously documented in humans and small animals.
- Despite the presence of OAEs, the dog exhibited normal auditory function, suggesting a subclinical or benign manifestation.
Implications:
- This case highlights the occurrence of otoacoustic emissions in dogs, expanding the known animal subjects for this phenomenon.
- The lack of effective treatment in humans and the absence of reported animal treatments suggest a conservative management approach for dogs.
- This condition is deemed non-life-threatening in canines, offering reassurance for pet owners and veterinarians regarding prognosis.